<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addBtn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="delBtn(index)">删除</button>
            <button @click="changeBtn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      name: '',
      age: 0,
      sex: '男',
      flage: false,
      index: '',
      arr: [
        { id: 1, name: '孙悟空', age: 1000, sex: '男' },
        { id: 2, name: '唐三增', age: 28, sex: '女' },
      ],
    }
  },
  methods: {
    // 添加/编辑
    addBtn() {
      if (this.name.trim() === '' || this.age === '')
        return alert('输入字符非法')
      if (this.flage === false) {
        this.arr.push({
          name: this.name,
          age: this.age,
          sex: this.sex,
        })
      } else {
        this.arr.splice(this.index, 1, {
          name: this.name,
          age: this.age,
          sex: this.sex,
        })
      }
      this.flage = false
    },
    // 删除
    delBtn(id) {
      this.arr = this.arr.filter((item) => item.id !== id)
    },
    // 编辑
    changeBtn(i) {
      this.name = this.arr[i].name
      this.age = this.arr[i].age
      this.sex = this.arr[i].sex
      this.flage = true
      this.index = i
    },
  },
}
</script>
